#2B4C81
Closest named color: Light Navy (#155084). oklch(41.9% 0.097 259.5), rgb(43, 76, 129).
Aa
White text reads best on this color (8.55:1).
About this color
#2B4C81 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.097 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.019 away. White text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #2B4C81 |
| RGB | rgb(43, 76, 129) |
| HSL | hsl(217, 50%, 34%) |
| OKLCH | oklch(41.9% 0.097 259.5) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2B4C81 | 8.55:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #2B4C81 | 2.45:1 | Fails | Lc 14.8 | Not readable |
| #2B4C81 text on white | 8.55:1 | AAA | Lc 89.2 | Fine for body text |
| #2B4C81 text on black | 2.45:1 | Fails | Lc -13.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 800.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF5
oklch(93.5% 0.017 259.4)
-
Step 200
200
#CDDAEE
oklch(88.5% 0.031 258.9)
-
Step 300
300
#ABC2E6
oklch(80.9% 0.057 259.3)
-
Step 400
400
#7FA2D9
oklch(70.8% 0.09 259.2)
-
Step 500
500
#5E8ACF
oklch(63.2% 0.115 259.1)
-
Step 600
600
#4472BC
oklch(55.5% 0.126 259.5)
-
Step 700
700
#365FA2
oklch(49% 0.117 259.7)
-
Step 800
800 (this color)
#2B4C81
oklch(41.9% 0.097 259.5)
-
Step 900
900
#284169
oklch(37.6% 0.076 259.4)
-
Step 950
950
#18263E
oklch(26.9% 0.049 260.7)
#2B4C81 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #345183 | 0.019 |
| Deuteranopia (no green cones) | #284980 | 0.010 |
| Tritanopia (no blue cones) | #005860 | 0.080 |
| Achromatopsia (no color) | #4C4C4C | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4C81
#2B4C81
oklch(41.9% 0.097 259.5)
- #664600
#664600
oklch(41.9% 0.087 78.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2B4C81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.019
- Dusk Blue #26538D ΔE 0.026
- Cobalt #1E488F ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.031
- Twilight Blue #0A437A ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.042
- Twilight #4E518B ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.054
Use #2B4C81 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.